Dampen the old generation allocation limit only after the initial old generation size was configure…

src/heap/heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 1278 matching lines @@
   double gc_speed = tracer()->CombinedMarkCompactSpeedInBytesPerMillisecond();
   double mutator_speed = static_cast<double>(
       tracer()
           ->CurrentOldGenerationAllocationThroughputInBytesPerMillisecond());
   intptr_t old_gen_size = PromotedSpaceSizeOfObjects();
   if (collector == MARK_COMPACTOR) {
     // Register the amount of external allocated memory.
     amount_of_external_allocated_memory_at_last_global_gc_ =
         amount_of_external_allocated_memory_;
     SetOldGenerationAllocationLimit(old_gen_size, gc_speed, mutator_speed);
-  } else if (HasLowYoungGenerationAllocationRate()) {
+  } else if (HasLowYoungGenerationAllocationRate() &&
+             old_generation_size_configured_) {
     DampenOldGenerationAllocationLimit(old_gen_size, gc_speed, mutator_speed);
   }
 
   {
     GCCallbacksScope scope(this);
     if (scope.CheckReenter()) {
       AllowHeapAllocation allow_allocation;
       GCTracer::Scope scope(tracer(), GCTracer::Scope::EXTERNAL);
       VMState<EXTERNAL> state(isolate_);
       HandleScope handle_scope(isolate_);
@@ skipping 5501 matching lines @@
     *object_type = "CODE_TYPE";                                                \
     *object_sub_type = "CODE_AGE/" #name;                                      \
     return true;
     CODE_AGE_LIST_COMPLETE(COMPARE_AND_RETURN_NAME)
 #undef COMPARE_AND_RETURN_NAME
   }
   return false;
 }
 }  // namespace internal
 }  // namespace v8